Carbon Brush 
NOS, new old stock vintage brush.   Brand new vintage replacement part, never used.
For Vintage car or truck starter / generator or any other electric / generator motor applications using this size brush.
Size is 1 1/8" wide  x 1/4" thick at top, .308" at bottom x approx.  5/8" long.
Unusual hard to find stepped brush.  Top section of brush is 1/4" thick.
Not marked 
Two slots in top, .189" wide

Vintage replacement part, limited supply available.
Angled cut on armature contact area. 

Please see my other listings for more vintage automobile electrical brushes.   Also Bronze Bushing, Flange bushings, Bearings, seals, Spherical rod ends and more hard to find items, plus antique and horseless carriage items.
Thank you for your purchase.